4545 Flagstaff Rd, Boulder, CO 80302 Property Records

Boulder County property record for 4545 Flagstaff Rd, Boulder, CO 80302

Property Summary

Property Type	Single Family Home
Details	3 bd · 1,968 sqft · built 1935
Lot Size	35.3 acres (1,539,644 sqft)
Owner	Individual Name on Record
Last Sale	$90,000 (Mar 1985)
Tax Bill	$4,160 (2025)
Deeds & Mortgages	Sep 2025 Transfer Sep 2022 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`1579-03-0-00-005`

Property Details

APN / Parcel Number

Primary APN	`1579-03-0-00-005`
Alternative APNs	`1579-03-0-00-011` `1579-03-0-00-013` `R0618503` `R0080911` `R0616312` `0080911`

Interior

Bedrooms	3 Beds
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	1,968 sqft Living Area
1st Floor Area	1,320 sqft
Upper Floors Area	648 sqft
Interior Walls	Paneling

Exterior

Year Built	Built 1935
Effective Year Built	Effective 1999
Architectural Style	A-Frame
Exterior Material	Wood Shingle
Construction Type	Masonry / Concrete Block
Roof Material	Asphalt
Lot Area	1,539,644 sqft
Garage Type	Detached
Garage Area	528 sqft
Porch	Enclosed Porch
Porch Area	512 sqft
Total Buildings	4 Buildings

Utilities, Heating & Cooling

Heating System	Floor/Wall Furnace

Location & Zoning

Account Number	R0618503
Street Address	4545 FLAGSTAFF RD
City	BOULDER
State	CO
Zip	80302-9512
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	POR SW 1/4 NE 1/4 & NW 1/4 SE 1/4 3-1S-71 PER REC NO 4103063 9/22/2025 SE-22-0002 - TOTAL 35.53 ACS M/L
Legal Range	71
Legal Township	1S
Legal Section	03
Legal Subdivision	TR, NBR 910 WALKER RANCH AREA
Legal Block	3
Jurisdiction	BOULDER CO
Township / Civil Division	BALD MOUNTAIN
Census Block Group	3
Census Block	3000
Census Tract	13706

Owner

Source: Boulder County records, as of September 18, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on Record
Mailing Address	4545 FLAGSTAFF RD, BOULDER, CO 80302-9512
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Sep 22, 2025	Intrafamily Transfer, Transfer
Sep 28, 2022	Intrafamily Transfer, Transfer
Aug 22, 2022	Intrafamily Transfer, Transfer

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Mar 11, 1985 · Amount on Record
Deed Sale	Mar 11, 1985 · Amount on Record
Prior Sale	May 23, 1983
Deed Document Number	1985676182
Last Transfer Date	Sep 19, 2025
Transfer Doc	0004103063
Record Updated	Oct 29, 2026

September 2025: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	BOULDER CO
Recording Date	Sep 22, 2025
Property Address	4545 FLAGSTAFF RD, BOULDER, CO 80302-9512
Document Number	0004103063
Instrument Date	Sep 19, 2025
Instrument	4103063
Transaction Type	Transfer
Record Updated	Feb 9, 2026

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name
Address	4545 FLAGSTAFF RD, BOULDER, CO 80302-9512

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4545 FLAGSTAFF RD, BOULDER, CO 80302-9512

September 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	BOULDER CO
Recording Date	Sep 28, 2022
Property Address	4545 FLAGSTAFF RD, BOULDER, CO 80302-9512
Document Number	0003983104
Instrument Date	Aug 30, 2022
Instrument	3983104
Transaction Type	Transfer
Record Updated	Feb 9, 2026

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4545 FLAGSTAFF RD, BOULDER, CO 80302-9512

August 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	BOULDER CO
Recording Date	Aug 22, 2022
Property Address	4545 FLAGSTAFF RD, BOULDER, CO 80302-9512
Document Number	0003977956
Instrument Date	Aug 16, 2022
Instrument	3977956
Transaction Type	Transfer
Record Updated	Feb 9, 2026

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4545 FLAGSTAFF RD, BOULDER, CO 80302-9512

Tax Assessment & Valuation

Source: Boulder County assessment roll, as of September 18, 2026

Property Jurisdictions

Type	Name
State	Colorado
County	Boulder County
Unified School District	Boulder Valley School District RE-2 (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$42,613 (-2.08%) Land $20,547 Building $22,066	$696,297 (-) Land $371,800 Building $324,497
2025	$4,160.00 (+3.79%)	$43,519 (-4.35%) Land $23,238 Building $20,281	$696,297 (-5.15%) Land $371,800 Building $324,497
2024	$4,008.00 (+1.65%)	$45,500 (-7.49%) Land $28,529 Building $16,971	$734,100 (-) Land $480,800 Building $253,300
2023	$3,943.00 (+49.41%)	$49,185 (+71.89%) Land $32,214 Building $16,971	$734,100 (+78.29%) Land $480,800 Building $253,300
2022	$2,639.00	$28,615 Land $13,031 Building $15,584	$411,740 Land $187,500 Building $224,240

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 5 (25% premium discount)
Nearby Flood Policies	4 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Extreme above 98.6% of the US · above 99.7% of Colorado
Wildfire Likelihood	2% annual chance
Exposure	Direct burnable vegetation

Insurers in high-risk areas may require mitigation or decline coverage; check availability before making an offer.

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Internet Providers

Source: FCC Broadband Data Collection, as of December 31, 2025

Cell Coverage

5G and 4G LTE (outdoors only)

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